CN113974960A

CN113974960A - Split type aqueous humor drainage device

Info

Publication number: CN113974960A
Application number: CN202111229236.9A
Authority: CN
Inventors: 田蓓
Original assignee: Beijing Tongren Hospital
Current assignee: Beijing Tongren Hospital
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-01-28
Also published as: WO2023065446A1

Abstract

The invention relates to the technical field of medical instruments, in particular to a split type aqueous humor drainage device. The method comprises the following steps: the puncture needle comprises a puncture needle, a drainage tube and a throttling structure, wherein the needle head of the puncture needle penetrates through the lumen of the drainage tube, and the tip end of the puncture needle extends out of the drainage tube to be suitable for puncture; the throttling structure and the drainage tube are arranged in a split mode. When an operation is performed, a medical worker sleeves a drainage tube on a needle head of a puncture needle, then punctures at a preset position, then pierces one end of the drainage tube into the preset position along the needle head, and then extracts the needle head, aqueous humor flows out from the preset position through the drainage tube, then a throttling structure is immediately connected with the drainage tube, the aqueous humor flowing out of the drainage tube is throttled through the throttling structure, and the flow rate of the aqueous humor is controlled. Only throttle through the throttle structure, do not need medical personnel to go to control the aqueous humor velocity of flow, the human factor that receives is less, and the aqueous humor velocity of flow is relatively stable, moreover, has simplified medical personnel's operation for aqueous humor drainage is more high-efficient.

Description

Split type aqueous humor drainage device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a split type aqueous humor drainage device.

Background

The treatment principle of glaucoma is to reduce intraocular pressure of patients, and the main treatment modes are eye drops, oral antihypertensive drugs or surgical treatment.

Surgical therapy for glaucoma employs various techniques, all of which aim to lower intraocular pressure by forming an artificial channel for outflow of aqueous humor to reduce resistance to outflow of aqueous humor. Like patent document CN209996599U discloses a multi-functional glaucomatous aqueous humor drainage device, it includes, including the syringe, one side of syringe is provided with the drainage tube, the drainage tube is connected through the connector with the syringe, and the drainage tube is provided with the drainage guide head for the one end of connector, the intermediate position department of drainage tube is provided with the connecting pipe, the inside of connecting pipe is provided with the filter screen, one side that the outside of drainage tube is close to the drainage guide head is provided with the silica gel soft piece, the inside of silica gel soft piece is provided with rubber sleeve, and one side of silica gel soft piece is located the outside position department of drainage tube and is provided with spacing pipe, rubber sleeve's inside seted up with drainage tube assorted draw-in groove.

When using, treat the position determination back of silica gel soft mass, can twitch the syringe, syringe accessible drainage guide head takes out the inside aqueous humor of patient's eyes, and medical personnel can extrude the silica gel soft mass in the aqueous humor pump-out process to reduce the cross-sectional area of drainage tube, and then can control the inside velocity of flow of drainage tube.

However, when the medical staff operates the injector, the silica gel soft block needs to be manually extruded, and the flow rate of the aqueous humor is not accurately controlled manually, so that the flow rate of the aqueous humor cannot be well controlled in the drainage process, the operation of the medical staff is increased, and the operation becomes complicated.

Disclosure of Invention

The invention provides a split type aqueous humor drainage device, which aims to solve the problem that the flow rate of aqueous humor cannot be well controlled in the drainage process of a glaucoma aqueous humor drainage device in the prior art.

The technical scheme of the invention is as follows:

a split aqueous humor drainage device comprising: the puncture needle comprises a puncture needle, a drainage tube and a throttling structure, wherein the needle head of the puncture needle penetrates through the lumen of the drainage tube, and the tip end of the puncture needle extends out of the drainage tube to be suitable for puncture; the throttling structure is arranged in a split mode with the drainage tube and is suitable for being connected with the drainage tube during drainage so as to throttle aqueous humor flowing out of the drainage tube and control the flow rate of the aqueous humor.

Preferably, the throttling structure comprises: first throttling element is suitable for and is connected with the drainage tube when the drainage, be equipped with first through-hole on the first throttling element, the inside elasticity membrane that is provided with of first through-hole, the elasticity membrane is suitable for the control aqueous humor velocity of flow, and the aqueous humor loops through drainage tube, first through-hole flow when the drainage.

Preferably, the first orifice member is of tubular construction.

Preferably, the first throttling element is further provided with a limiting structure, and the position of the first throttling element is limited through the limiting structure.

Preferably, the limit structure includes: the positioning piece is connected with the first throttling piece, a suture hole is further formed in the positioning piece, and the position of the first throttling piece is limited through the suture hole during drainage.

Preferably, at least two positioning pieces are uniformly distributed along the circumferential direction of the first throttling piece.

Preferably, the throttling structure further comprises: the second throttling element is arranged in a split mode with the first throttling element and is suitable for being connected with the first throttling element when in drainage, so that the flow of the aqueous humor flowing through the first through hole is throttled, and the flow rate of the aqueous humor is controlled.

Preferably, the first throttling member has a rigidity smaller than that of the draft tube, and a form of the first through hole is changed by the second throttling member.

Preferably, the second orifice member includes: first arm lock and second arm lock, first arm lock and second arm lock are connected, work as first arm lock the second arm lock with first throttling element connects the back, first arm lock with form the clearance that is suitable for the first throttling element of centre gripping between the second arm lock.

Preferably, a plurality of second throttling pieces with different specifications are arranged, and the gaps formed by the second throttling pieces with different specifications are different, so that different throttling effects are achieved.

The technical scheme of the invention has the following advantages:

1. the invention discloses a split aqueous humor drainage device, which comprises: the puncture needle comprises a puncture needle, a drainage tube and a throttling structure, wherein the needle head of the puncture needle penetrates through the lumen of the drainage tube, and the tip end of the puncture needle extends out of the drainage tube to be suitable for puncture; the throttling structure is arranged in a split mode with the drainage tube and is suitable for being connected with the drainage tube during drainage so as to throttle aqueous humor flowing out of the drainage tube and control the flow rate of the aqueous humor.

When an operation is performed, a medical worker sleeves a drainage tube on a needle head of a puncture needle, then punctures at a preset position, then pierces one end of the drainage tube into the preset position along the needle head, and then extracts the needle head, aqueous humor flows out from the preset position through the drainage tube, then a throttling structure is immediately connected with the drainage tube, the aqueous humor flowing out of the drainage tube is throttled through the throttling structure, and the flow rate of the aqueous humor is controlled.

In the drainage process, only through the throttle structure throttle, do not need medical personnel to go to control the aqueous humor velocity of flow, the human factor that receives is less, and the aqueous humor velocity of flow is relatively stable, moreover, has simplified medical personnel's operation for aqueous humor drainage is more high-efficient.

2. The split aqueous humor drainage device of the invention, the throttling structure further comprises: the second throttling element is arranged in a split mode with the first throttling element and is suitable for being connected with the first throttling element when in drainage, so that the flow of the aqueous humor flowing through the first through hole is throttled, and the flow rate of the aqueous humor is controlled.

And a plurality of second throttling pieces with different specifications are arranged, and gaps formed by the second throttling pieces with different specifications are different, so that different throttling effects are achieved.

In the invention, the first throttling is realized by the first throttling element, and the second throttling is realized by the second throttling element. The primary throttling has different throttling effects according to different intraocular pressures of patients, and the desired throttling effect can be hardly achieved without secondary throttling.

If the primary throttling can not achieve the desired throttling effect, secondary throttling is performed, and when the secondary throttling is performed, the second throttling piece with the larger gap can be selected firstly, and then the second throttling piece with the smaller gap is replaced step by step, so that the ideal throttling effect is achieved. The gaps formed by the second throttling pieces with different specifications are different, and medical workers can conveniently select the appropriate second throttling piece according to the size of the gap.

In the invention, the second throttling element and the first throttling element are arranged in a split mode, so that the second throttling element does not influence the preorder operation, and the second throttling element is used only when the second throttling element is needed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the split aqueous humor drainage device of the present invention in use;

FIG. 2 is a schematic diagram of an exploded view of the structure shown in FIG. 1;

FIG. 3 is a schematic view of a puncture needle and a drainage tube of the present invention;

FIG. 4 is one of the embodiments of the first orifice member of the present invention;

FIG. 5 is a second embodiment of the first orifice member of the present invention;

FIG. 6 is one of the embodiments of the second orifice member of the present invention;

fig. 7 shows a second embodiment of the second orifice member of the present invention.

Description of reference numerals:

1-puncture needle; 2-a needle head; 3-a drainage tube; 4-a first orifice member; 5-a first via; 6-stretch film; 7-a positioning member; 8-suture holes; 9-a second orifice; 10-a first clamp arm; 11-a second clamping arm; 12-gap.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The split type aqueous humor drainage device of the embodiment, as shown in fig. 1 to 7, comprises: the puncture needle comprises a puncture needle 1, a drainage tube 3 and a throttling structure, wherein a needle head 2 of the puncture needle 1 penetrates through a lumen of the drainage tube 3, and the tip of the needle head extends out of the drainage tube 3 to be suitable for puncture; the throttling structure is arranged in a split mode with the drainage tube 3 and is suitable for being connected with the drainage tube 3 during drainage so as to throttle the aqueous humor flowing out of the drainage tube 3 and control the flow rate of the aqueous humor. Specifically, one end of the drainage tube 3 used for puncture is of an elliptical inclined plane structure, so that puncture is facilitated.

When an operation is performed, a medical worker sleeves a drainage tube 3 on a needle head 2 of a puncture needle 1, as shown in fig. 3, then punctures at a preset position, then pierces the drainage tube 3 into the preset position along one end of the needle head 2, and then pulls out the needle head 2, so that aqueous humor flows out from the preset position through the drainage tube 3, then a throttling structure is immediately connected with the drainage tube 3, the aqueous humor flowing out from the drainage tube 3 is throttled through the throttling structure, and the flow rate of the aqueous humor is controlled.

Wherein, the throttle structure includes: first throttle 4 is suitable for and is connected with drainage tube 3 when the drainage, be equipped with first through-hole 5 on the first throttle 4, the inside elastic membrane 6 that is provided with of first through-hole 5, elastic membrane 6 is suitable for the control aqueous humor velocity of flow, and the aqueous humor loops through drainage tube 3, first through-hole 5 flow out when the drainage. It should be noted that, the elastic membrane 6 in this embodiment is a flap-shaped structure, one position of the elastic membrane 6 is connected with the inner wall of the first through hole 5, and the rest portion of the elastic membrane is close to the inner wall of the first through hole 5 and is in a free state, and in the drainage process, the elastic membrane 6 deforms and is opened by pressure.

Elastic membrane 6 can be in aqueous humor drainage in-process self-adaptation adjustment, and to the patient that the intraocular pressure is high, elastic membrane 6 pressurized is big, and the degree of opening is great, and at the drainage in-process, along with the intraocular pressure reduction, elastic membrane 6's deformation reduces gradually, finally reaches the ideal range when the intraocular pressure after, the intraocular pressure is not enough to make elastic membrane 6 open, and elastic membrane 6 closes.

Specifically, as shown in fig. 4, as a first embodiment of the first throttling element 4, the first throttling element 4 is of a tubular structure, which is convenient for processing and manufacturing, and it should be noted that the first throttling element 4 may be of other shape structures as long as the first through hole 5 is ensured.

As shown in fig. 5, a position limiting structure is further disposed on the first throttling element 4, and the position limiting structure is used for limiting the position of the first throttling element 4, and comprises: the positioning piece 7 is connected with the first throttling piece 4, a suture hole 8 is further formed in the positioning piece 7, and the position of the first throttling piece 4 is limited through the suture hole 8 during drainage. The positioning piece 7 is also convenient for medical staff to handle during operation, and is convenient for the medical staff to suture or operate when being connected with the drainage tube 3.

Specifically, at least two positioning pieces 7 are uniformly distributed on the circumference of the first throttling piece 4. As a preferred embodiment, two symmetrically arranged positioning elements 7 can be used.

Further, the throttling structure further comprises: second throttling element 9, with the split type setting of first throttling element 4, be suitable for when the drainage with first throttling element 4 is connected to the convection current the aqueous humor of first through-hole 5 throttles, controls the aqueous humor velocity of flow. The second throttling element 9 and the first throttling element 4 are arranged in a split mode, so that the second throttling element 9 cannot influence the preorder operation, and the second throttling element 9 is used only when the second throttling element 9 is needed.

Further, first throttling element 4 and second throttling element 9 all adopt biological silica gel to make, first throttling element 4's rigidity is less than drainage tube 3, and under the effect of second throttling element 9 the form of first through-hole 5 changes, changes according to the form of difference in order to control the aqueous humor velocity of flow.

Specifically, the second orifice 9 includes: first arm lock 10 and second arm lock 11, first arm lock 10 and second arm lock 11 are connected, when first arm lock 10, second arm lock 11 with first throttling element 4 connects the back, first arm lock 10 with form the clearance 12 that is suitable for centre gripping first throttling element 4 between the second arm lock 11.

In the present embodiment, "primary throttling" is realized by the first throttling member 4, and "secondary throttling" is realized by the second throttling member 9. The primary throttling has different throttling effects according to different intraocular pressures of patients, and the desired throttling effect can be hardly achieved without secondary throttling.

If the primary throttling can not achieve the desired throttling effect, secondary throttling is carried out, and when the secondary throttling is carried out, the second throttling element 9 with the larger clearance 12 can be selected firstly, and then the second throttling element 9 with the smaller clearance 12 is replaced step by step, so that the ideal throttling effect is achieved. The size of the gap 12 formed by the second throttling element 9 with different specifications is different, and the medical staff can conveniently select the proper second throttling element 9 according to the size of the gap 12.

There are various connection modes of the first clamping arm 10 and the second clamping arm 11, and three connection modes are provided in the embodiment.

As shown in fig. 6, the first embodiment is: the first clamping arm 10 and the second clamping arm 11 are made of materials with good rigidity, namely, a V-shaped elastic clamp is formed.

As shown in fig. 7, the second embodiment is: one ends of the first clamping arm 10 and the second clamping arm 11 are connected through a flexible material, and the other ends are connected through a clamping structure;

the third embodiment is: the first clamping arm 10 is hinged with one end of the second clamping arm 11, and the other end of the first clamping arm is connected with the other end of the second clamping arm through a clamping structure; the clamping structure in the two embodiments can adopt the existing clamping structure, but the clamping structure needs to be ensured to be separated after clamping.

The split aqueous humor drainage device of the embodiment is provided with a plurality of second throttling pieces 9 with different specifications, and the second throttling pieces 9 with different specifications form different gaps 12 so as to play different throttling effects.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.

Claims

1. A split type aqueous humor drainage device, comprising:

the puncture needle comprises a puncture needle (1) and a drainage tube (3), wherein a needle head (2) of the puncture needle (1) penetrates through a lumen of the drainage tube (3), and the tip of the needle head extends out of the drainage tube (3) to be suitable for puncture;

the throttling structure is arranged in a split mode with the drainage tube (3) and is suitable for being connected with the drainage tube (3) during drainage so as to throttle the aqueous humor flowing out of the drainage tube (3) and control the flow rate of the aqueous humor.

2. The split aqueous humor drainage device of claim 1, wherein the throttling structure comprises:

first throttle spare (4), be suitable for when the drainage to be connected with drainage tube (3), be equipped with first through-hole (5) on first throttle spare (4), first through-hole (5) inside is provided with elastic membrane (6), elastic membrane (6) are suitable for the control aqueous humor velocity of flow, and the aqueous humor loops through drainage tube (3), first through-hole (5) flow when the drainage.

3. The split aqueous humor drainage device of claim 2, wherein the first throttling member (4) is a tubular structure.

4. The split type aqueous humor drainage device of claim 2, wherein a limiting structure is further arranged on the first throttling element (4), and the position of the first throttling element (4) is limited by the limiting structure.

5. The split aqueous humor drainage device of claim 4, wherein the limiting structure comprises:

the positioning piece (7), the positioning piece (7) with first throttling piece (4) are connected, still be provided with suture hole (8) on positioning piece (7), pass through when the drainage suture hole (8) are injectd the position of first throttling piece (4).

6. The split type aqueous humor drainage device according to claim 5, wherein at least two positioning members (7) are uniformly distributed along the circumference of the first throttling member (4).

7. The split aqueous humor drainage device of any one of claims 2 to 6, wherein the throttling structure further comprises:

second throttling element (9), with the split type setting of first throttling element (4), be suitable for when the drainage with first throttling element (4) are connected, in order to the convection current the aqueous humor of first through-hole (5) carries out the throttle, controls the aqueous humor velocity of flow.

8. The split aqueous humor drainage device of claim 7, wherein the first throttling member (4) has a rigidity lower than that of the drainage tube (3), and the first through hole (5) is changed in its form by the second throttling member (9).

9. The split aqueous humor drainage device of claim 8, wherein the second throttling member (9) comprises:

first arm lock (10) and second arm lock (11), first arm lock (10) and second arm lock (11) are connected, work as first arm lock (10), second arm lock (11) with first throttling part (4) are connected the back, first arm lock (10) with form between second arm lock (11) and be suitable for the clearance (12) of centre gripping first throttling part (4).

10. The split type aqueous humor drainage device according to claim 9, wherein a plurality of the second throttling members (9) with different specifications are provided, and the gaps (12) formed by the second throttling members (9) with different specifications are different to achieve different throttling effects.